Attachment for automobile-radiators.



W. R. JOHNSTON.

AITACHMENT FOR AUTOMOBILE RADIATORS.

APPUCATION FILED JUNE 2 I916. 1,275,441 Patented Aug. 13, 1918 p WILLIAM it. aoHNsroN, or EAGLE noon, camronnm.

ATTACHMENT FOR AUTOMOBILE- RADIAT QRS.

To all whom it may concern:

Be it known that I, WILLIAM R. JOHNSTON, a citizen of the UnitedStates, residing at E2 1e Rock, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in All-- tachments for Automobile Radiators, of which the following is a specification.

The object of this invention is to provide an attachment or vent device to'be applied to the unchanged common radiators of water-cooled automobiles for rapidly eliminating heat, thus avoiding overheating the water and the many disagreeable and dangerous possible consequences. The device involves substituting for the usual cap for the filling openinga device which at all times allows rapid escape of gaseous fluid while practicallycpreventing the passage of liquid.

It is, of course, Well known that a great amount of heat becomes latent in the conversion-of water at 212 F. into steam at nearly the same temperature, and bydischarging this steam as fast as it is formed .a great amount of heat is'eliminated, pressure in the radiator-is prevented, and if at the same time water is prevented from passing there is no possibility of serious burns such as often followunscrewing the cap, of an overheated radiator.

In the accompanying drawings,

Figure 1 shows my devices in position on a radiator.

Fig. 2 is a plan view of the vent device. Fig. 3 is a bottom plan view of the same devices.

' Fig. 4 is a diametrical section otwthe deouter end of the tube extend parallel bars the tube is provided with 4, spaced to form slots 5., The outer end of a corrugated flange 6 to facilitate screwing it into place.

Within the tube thethreaded portion is fixed a transverse metal plate 7 provided with numerous holes -8 whereby it 1s adapted to break up and neutralize largely the momentum of any body of Water thrown against-it. Above the plate and s aced from it by an annular preferably slightly above Patented rug. is, 1918.

7 Application filed June 2, 1916. Serial No. 101,389... I

Y l i n v n i washer9 1s a wire gauze diaphragm 10 upon ,which rests an annular washer 11 support mg a textile-diaphragm 1-2,and upon the latter rests an inner tube '13 of metal, preferably separated from the body of the tube 3 by a fiber tube or sleeve 14. Upon the upper end of the tube rests a second fabric diaphragm 15 separated by an annular washer 16 from a second wire gauze disk 17 between which and the bars 4: lies an annular washer 18. All these diaphragms and intervening parts arefirmly pressed together and secured in such manner that they cannot move or be separated except by design.

The outer wire gauze'sheet lies a little within the plane of the bars 4 so that the latter do not obstruct any portion of it, and so that a brush may reach it. Any collected dust may be removed by detaching the structure from the radiator and brushing the outer gauze while the structure is in verted in water. This, l1owever, is rarely necessary even in desert country where the device has been mostly used.

It is to be noted that the tube 3 is so large thatunder the very slight internal pressure steam and vapor at all times escape as fast as they are formed, the outlet never being closed and in fact without provision for closing, so that it cannot be closed by inadvertent-e. It may also be observed that for replenishing with water the vent is as easily removed as a cap. Water poured into the-slots would, of course, slowly leak inward, but it is notpracticable to refill in this manner.

What I claim is: a

1. The combination with an automobile radiator provided with a large vent opening to the atmosphere, of a plurality of materisaid opening and having retained and hot water is never permitted to escape in any material quantity.

its

2. Invent devices for radiators of water cooled automobile engines, the combination with a radiator having a suitable opening above the water line, of a series of alternating wire gauze and filamentary diaphragms extending across the opening and adapted to allow steam to escape directly to the open,

air as fast as it may form and to prevent the escape of any stream of water.

3. The combination with a radiator for water cooling automobile engines, of a large vent tube outwardly barred by heavy metal openwork, and a foraminous structure extendin r across the tube at some distance inward rom the openwork and adapted to allow steam to escape as fast as it may form directly to the open air and to prevent the ternating wire gauze diaphragms and filamentary diaphragms extendin across the middle portion of the tube an adapted in size and character to ermit steam to es cape as fast as it may orm and to bar the passage of any stream of water, a heavy oraminous metal sheet spaced from the inner of said diaphragms, and heavy metal bars spaced from the outer of said diaphragins and adapted to permit brushing it from the exterior.

In testimony whereofI affix my signature.

WILLIAM R. JOHNSTON. 

